Hello. On 06/02/2015 06:41 PM, Laurent Pinchart wrote:
From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
If kzalloc returns null then isp1760_ep_alloc_request performs a null pointer dereference on req. Check for null to avoid this.
I told you there's no dereference and yet you're repeating it again. :-(
How about
"isp1760_ep_alloc_request allocates a structure with kzalloc without checking for NULL and then returns a pointer to one of the structure fields. As the field happens to be the first in the structure the caller can properly check for NULL, but this is risky if the structure layout is changed later. Add an explicit NULL check for the kzalloc return value."
Fine with me! Thanks, Laurent. :-)
a null pointer dereference on req. Check for null to avoid this.
Detected with smatch static analysis:
drivers/usb/isp1760/isp1760-udc.c:816 isp1760_ep_alloc_request()
error: potential null dereference 'req'. (kzalloc returns null)
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
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